Every spiritual successor to Mega Man needs a spiritual successor to Roll. In Mighty No. 9's case, it's a girl named Call (shush), and she'll look like one of the nine sketches above, based on your vote.

You don't have to back the Kickstarter project to determine the look of the girl robot in Keiji Inafune's subversive reclamation of the popular property he created. All you have to do is hit up the voting page, select choice "C", and click the button

I suppose you could click the other letters as well, but they're probably broken, or maybe they signal thieves to steal your identity. You can never tell. I verified my choice was safe, so its probably best to go with the girl with a robot unicorn by her side.